No if you ship a defective product back to Amazon, one that has caused injury, and they got rid of it and you sued, their act could and would likely be consider

No if you ship a defective product back to Amazon, one that has caused injury, and they got rid of it and you sued, their act could and would likely be considered * spoilation of evidence*. As a result Amazon could be sanctioned by a court and have the burden of evidence shift against them (i.e. no longer do the plaintiffs/you have to prove the product was defective, now the defense would have to prove the product wasn't defective).